Sources and field evidence
Catalog Archive: Baseline specifications compiled from historical manufacturer archives and equipment registries. Laboratory test report verification in progress.
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Engineering & Capability Benchmark
Specific output, tractive ratio, and segment percentile
Engine and power specifications
- Engine model
- International Harvester D-206
- Fuel type
- Diesel
- Rated horsepower
- 66 hp
- Rated PTO Power
- N/A (International Harvester specification)
- Cylinders
- 4
- Displacement
- 3.4 L (206.4 ci)
- Bore / stroke
- 3.875x4.38 inches 98 x 111 mm
- Rated RPM
- 2180 RPM
- Crankcase oil capacity
- N/A
- Coolant capacity
- N/A
Maintenance picks for the 645
Filters, oil and common wear parts for this model.
Transmission and chassis specifications
- Transmission type
- N/A
- Gears (forward / reverse)
- N/A
- Drive system
- 2WD
- Wheelbase
- N/A
- Front tire
- N/A
- Rear tire
- N/A
- Hydraulic flow
- N/A
- Rear hitch
- II
Implement Draft & Ballast Matcher
Simulate draft resistance, drawbar power transfer, and optimal axle weight distribution for International Harvester 645.
Engine demand (194.7 HP) exceeds rated power (66 HP). Reduce working speed by 1.0-1.5 mph or reduce working width.
Instant Used Market Valuation Projector
Algorithmic resale estimate for International Harvester 645 (1980)
Direct Segment Rivals & Showdowns
Head-to-head match-ups calibrated by horsepower and era
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International Harvester
USA • 253 Models
The International Harvester Company (IH or International) was a pioneering American industrial powerhouse founded in 1902 through the merger of five leading agricultural equipment manufacturers, including the McCormick Harvesting Machine Company and Deering Harvester Company. This strategic consolidation created one of the largest agricultural machinery manufacturers in the world, with an immediate impact on the industry. International Harvester quickly became renowned for its innovative Farmall tractors, which revolutionized farming practices with their versatility and efficiency. The company's product line expanded to include the iconic Cub Cadet tractors, as well as the consolidated McCormick-Deering line that carried forward the legacy of its founding companies. Beyond its dominance in the agricultural sector, International Harvester was a major player in commercial vehicles, producing the popular Scout and Travelall automobiles, along with a wide range of trucks. The company's diverse portfolio also included lawn and garden equipment and household appliances, making it a household name across America. However, the 1980s brought significant challenges as the company faced financial difficulties. In response, International Harvester began divesting its divisions, starting with the sale of its construction equipment division to Dresser Industries in 1982. The pivotal moment came in 1984 when the farm equipment division was acquired by Tenneco's subsidiary, Case Corporation, leading to the formation of the Case IH brand. Today, Case IH is part of CNH Industrial, while the European division lives on as McCormick Tractors, owned by Italy's ARGO SpA. By 1986, International Harvester had transformed into Navistar International, focusing exclusively on trucks and engines.
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